一种应用于光伏系统的双向DC/DC变换器  

A Research on Bi-directional DC/DC Converter for Photovoltatic Power System

作　　者：郭海滨[1] 张崇巍[1] 张兴[1] 刘胜永[1] 

机构地区：[1]合肥工业大学,安徽合肥230009

出　　处：《电力电子技术》2010年第6期51-52,共2页Power Electronics

基　　金：广西教育厅科研立项项目(200911LX164)~~

摘　　要：针对光伏发电中发电量受光照强度、环境温度等自然条件变化的影响,而不能持续、稳定地输出电能这一问题,通过分析其能量的流动、功率传送大小的影响因素,提出一种光伏储能用双向DC/DC变换器,并对其性能以及软开关范围进行分析,得出能量与占空比以及移相角之间的关系,提出采用占空比和移相角两参数调节的方式,实现了最大功率输出的控制方式,最后在一台1 kW的样机上进行了实验验证。The intensity of illumination and environmental temperature effect power transfer in PV system,thereby the export power is discontinuous and unstable.Detailed theoretical analysis in the affect factor of power-flow.A bi-directional DC/DC converter is presented when the converter is applied to the PV system.Along with the analysis of the performance and the range of soft-switching,educe the relation in power transfer and phase-shift with duty cycle control and realized the most power transfer.Finally,the experimental results are presented to verify the performance of the proposed converter.

关 键 词：变换器 光伏发电 移相加占空比控制 软开关 

分 类 号：TM46[电气工程—电器]